<html>
  Nested list:
  <ul>
    <li>Item 1</li>
    <ul>
      Should be indented to Child of Item 1
      <li>Child of Item 1
    </ul>
    <li>Item 2
    <ul><li>Child of Item 2</ul>
  </ul>
  <pre>
+ html
    head
    + body
        #TEXT
        + ul
            + li
                #TEXT
            + ul
                #TEXT
                + li
                    #TEXT
            + li
                #TEXT
                + ul
                    + li
                        #TEXT
</html>
